

.span16 {
    float: left;
    margin-left: 14px;
    min-height: 1px;
    width: 1500px;
}

.home-promo-list li {
    float: left;
    width: 316px;
    height: 170px;
    margin-left: 15px;
}
/*将a标签和img标签转成块元素*/
.home-promo-list a {
    display: block;
    height: 170px;
}

.home-promo-list img {
    display: block;
    width: 316px;
    height: 170px
}